Supreme Court of the United States June 26, 1972, No. 70-87 (Police Department of Chicago v. Mosley)

lead-opinion

Mr. Justice Marshall

delivered the opinion of the Court.

At issue in this case is the constitutionality of the following Chicago ordinance:

“A person commits disorderly conduct when he knowingly:

“(i) Pickets or demonstrates on a public way within 150 feet of any primary or secondary school build*93ing while the school is in session and one-half hour before the school is in session